Branches or types are characterized by the plan of their structure,Classes, by the manner in which that plan is executed, as far as ways and means are concerned, Orders, by the degrees of complication of...

We see, then, that even from the zoological point of view, which is the least interesting and—note this—not decisive, a being in such condition can never achieve a genuine equilibrium; we also see something that...

The obsession with putting ourselves at the centre of everything is the bane not only of theologians but also of zoologists.

There are 2,500 kinds of sponges, all of them consist largely of holes.

Whales are silly once every two years. The young are called short-heads or baby blimps. Many whale romances begin in Baffin’s bay and end in Procter and Gamble’s factory, Staten Island.

Infant wart hogs resemble both sides of the family.

Perhaps if zoologists would contemplate the wide variations presented by many plants of indubitably one and the same species, and the still wider diversities of long cultivated races from an original stock, they would find...

The zoologist is delighted by the differences between animals, whereas the physiologist would like all animals to work in fundamentally the same way.

Have pity on them all, for it is we who are the real monsters.

If these d’Herelle bodies were really genes, fundamentally like our chromosome genes, they would give us an utterly new angle from which to attack the gene problem. They are filterable, to some extent isolable, can...